gpsTunes - controlling navigation via audio feedback
S. Strachan, P. Eslambolchilar,, Roderick Murray-Smith, S. Hughes, and S. O'Modhrain
In: Mobile HCI, Sept 2005, Salzburg.
We combine the functionality of a mobile Global Positioning
System (GPS) with that of an MP3 player, implemented on
a PocketPC, to produce a handheld system capable of guiding
a user to their desired target location via continuously
adapted music feedback. We illustrate how the approach
to presentation of the audio display can benefit from insights
from control theory, such as predictive ‘browsing’ elements
to the display, and the appropriate representation
of uncertainty or ambiguity in the display. The probabilistic
interpretation of the navigation task can be generalised
to other context-dependent mobile applications. This is the
first example of a completely handheld location- aware music
player. We discuss scenarios for use of such systems.